Temp08 DS2405 Switch

[Guest]

I have a Temp08 v2.06 with a DS2405 connected as a switch. when the contact is closed the status keeps randomly changing from on to off have tried with a DS2406 but get the same results. Attached is the output from hyperterminal

[Midon]

Brian,

This is a recently discovered issue with 2.06 (and 2.04). We're working on it. Please contact us directly for progress reports.

Mitch

[Midon]

V2.07 is now available that (I believe) addresses the issues with false reads on DS2405's.

Mitch

[Pierre]

I have just tried DS2405 for the first time, using the schematic found on the Midon site.
I cannot have the temp08 to see the switch "on" state altough it has found the sensor and reports the off state.

I this related to the temp08 or am I so lousy soldering ?
(Of course I HAVE checked my work )
Woulkd this be cured by V2.07 and how should I get it ?


Thanks

[Xtension]

Same thing here with the DS2405. Temp08 'sees' the sensor but status always reports OFF.

Just updated the Temp08 firmware to 2.11. Problem persists.

Mitch suggested using DS2406/7's instead but I'm waiting for sample devices from Maxim. Seems not too many electronic distributors stock the 06/07 parts.

[Pierre]

Xtension,
Let me know if it works, I am still hanged on this with no change
Thanks

[Xtension]

Pierre,

Finally got around to trying the DS2406 sample I received from Maxim. The part is the TO92 case and is a drop-in replacement DS2405.

It works! Well, sort of. When the PIO input is pulled low the Temp08 immediately reports the sensor OFF to HS. When pulled high, the Temp08 reports ON, OFF, ON then OFF again before settling down to an ON condition. After watching the DS2406 state for a while with the PIO line high I see that its state is toggling every 1 to 4 minutes. Not good. All I want to do is read an outdoor rain switch so I know when to disable my irrigation system.

My sensor reads have always been inconsistent except for temperature only devices like the 18S20 or 18B20. Version 2.11 is supposed to have improved bad read handling but apparently not. The bad reads are not noticeably improved. The humidity sensor readings are actually worse than before! Also, version 2 no longer supports the Relay05 I was using which is fine because I've already switched to a USB relay solution. So far, it's been 100% reliable and fast, too.)

The Temp08 is a good temperature reading device but I'm fed up trying to do anything else with it. Looks like it's time for an alternate 1-Wire solution. Between the Temp08 and mcsTemperature's quirks, I'm going nuts! Think I'm going to try a USB to 1-Wire device such as the DS9490 and see what kind of trouble I can get into with that.

Anyone want to buy a slightly used Temp08 with version 2.11 firmware?



--Steve

[Guest]

Hi

I am now only using my Temp08 for reading temperatures and a 1-wire counter. I could not get it working reliably enough with the DS2405/6 inputs

Brian

[Pierre]

Thank you for this review.
I guess I will go X-10 once more for input sensor, or maybe pull another wire for a direct input on my Stargate...just the same as 10 years ago .....

[Midon]

Mea Culpa!

I have let this issue go on for far too long by trying to simply patch the code that works with the DS2405's. So... I will completely re-write the code and update you when this is done, probably in the next couple of months.

Sorry about all the trouble, folks!

Mitch

[Xtension]

Thanks Mitch,

Would be nice to resolve this issue once and for all. Do you think a rewrite would fix 2438 issues as well?

In the mean time, I may yet be able to use the DS2406 as a rain switch monitor since the device status doesn't toggle when it's in an off condition.

I could have the following event triggers,

If the rain switch sensor goes ON
then disable the irrigation system for x hours.

and,

If the rain switch sensor has been OFF for at least y hours
then re-enable the irrigation system.

The above would be the basic rain event triggers anyway.

We just had about a half-inch of rain fall in the north L.A. area over the weekend. Would have been a good test. I'll be ready for the next 'big' rainfall!

[Midon]

1WSwitch

After a long struggle with trying to squeeze the right code into TEMP08 to properly read DS2405's and DS2406's, we finally released a new product called 1WSwitch which is intended to be a reliable way of reading and setting input and output 1-Wire sensors such as the DS2405 and DS2406. More information about this new product is available on our website at 1WSwitch.

The current version of software for TEMP08 will be replaced in the near future with a version that removes the compatability with the DS2405 and DS2406 since there is no way to include the proper code required with the code space remaining. We will continue to support all versions of TEMP08 software but will no longer be making code changes in support of the DS2405 or DS2406.

Please email us directly if you have any specific questions about either product.

Regards,

Mitch

[jon00]

Mitch,

Is there a reason for you still using a minimum of 1 minute between polling? It just seems a very long time for switch readings if you only have a few devices and that VB.NET scripting is available in HS.

[Midon]

The switches are read continuously and the state changes will be displayed within a very short time - the interval will depend on how many switches are connected.

The poll is used to produce regulary snapshots of the state and is not necessary to determine the switch state. This is a carry-over from TEMP08.

Mitch